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 ** This file is part of the demonstration applications of the Qt Toolkit.
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#include "glextensions.h"

#define RESOLVE_GL_FUNC(f) ok &= bool((f = (_gl##f) context->getProcAddress(QLatin1String("gl" #f))));

bool GLExtensionFunctions::resolve(const QGLContext *context) {
    bool ok = true;

    RESOLVE_GL_FUNC(CreateShaderObjectARB)
    RESOLVE_GL_FUNC(ShaderSourceARB)
    RESOLVE_GL_FUNC(CompileShaderARB)
    RESOLVE_GL_FUNC(GetObjectParameterivARB)
    RESOLVE_GL_FUNC(DeleteObjectARB)
    RESOLVE_GL_FUNC(GetInfoLogARB)
    RESOLVE_GL_FUNC(CreateProgramObjectARB)
    RESOLVE_GL_FUNC(AttachObjectARB)
    RESOLVE_GL_FUNC(DetachObjectARB)
    RESOLVE_GL_FUNC(LinkProgramARB)
    RESOLVE_GL_FUNC(UseProgramObjectARB)
    RESOLVE_GL_FUNC(GetUniformLocationARB)
    RESOLVE_GL_FUNC(Uniform1iARB)
    RESOLVE_GL_FUNC(Uniform1fARB)
    RESOLVE_GL_FUNC(Uniform4fARB)
    RESOLVE_GL_FUNC(UniformMatrix4fvARB)

    RESOLVE_GL_FUNC(GenFramebuffersEXT)
    RESOLVE_GL_FUNC(GenRenderbuffersEXT)
    RESOLVE_GL_FUNC(BindRenderbufferEXT)
    RESOLVE_GL_FUNC(RenderbufferStorageEXT)
    RESOLVE_GL_FUNC(DeleteFramebuffersEXT)
    RESOLVE_GL_FUNC(DeleteRenderbuffersEXT)
    RESOLVE_GL_FUNC(BindFramebufferEXT)
    RESOLVE_GL_FUNC(FramebufferTexture2DEXT)
    RESOLVE_GL_FUNC(FramebufferRenderbufferEXT)
    RESOLVE_GL_FUNC(CheckFramebufferStatusEXT)

    RESOLVE_GL_FUNC(ActiveTexture)
    RESOLVE_GL_FUNC(TexImage3D)

    RESOLVE_GL_FUNC(GenBuffers)
    RESOLVE_GL_FUNC(BindBuffer)
    RESOLVE_GL_FUNC(BufferData)
    RESOLVE_GL_FUNC(DeleteBuffers)
    RESOLVE_GL_FUNC(MapBuffer)
    RESOLVE_GL_FUNC(UnmapBuffer)

    return ok;
}

bool GLExtensionFunctions::glslSupported() {
    return CreateShaderObjectARB
           && CreateShaderObjectARB
           && ShaderSourceARB
           && CompileShaderARB
           && GetObjectParameterivARB
           && DeleteObjectARB
           && GetInfoLogARB
           && CreateProgramObjectARB
           && AttachObjectARB
           && DetachObjectARB
           && LinkProgramARB
           && UseProgramObjectARB
           && GetUniformLocationARB
           && Uniform1iARB
           && Uniform1fARB
           && Uniform4fARB
           && UniformMatrix4fvARB;
}

bool GLExtensionFunctions::fboSupported() {
    return GenFramebuffersEXT
           && GenRenderbuffersEXT
           && BindRenderbufferEXT
           && RenderbufferStorageEXT
           && DeleteFramebuffersEXT
           && DeleteRenderbuffersEXT
           && BindFramebufferEXT
           && FramebufferTexture2DEXT
           && FramebufferRenderbufferEXT
           && CheckFramebufferStatusEXT;
}

bool GLExtensionFunctions::openGL15Supported() {
    return ActiveTexture
           && TexImage3D
           && GenBuffers
           && BindBuffer
           && BufferData
           && DeleteBuffers
           && MapBuffer
           && UnmapBuffer;
}

#undef RESOLVE_GL_FUNC
